ffmpeg
yuv格式转换
ffmpeg -s 1920x1536 -pix_fmt uyvy422 -i c.raw -pix_fmt yuv420p c2.yuv
yuv修改分辨率
ffmpeg -s 1920x1536 -pix_fmt nv12 -i d.raw -vf "scale=1080:720:flags=bicubic" -sws_flags bicubic -pix_fmt nv12 -y d1.yuv
添加水印
ffmpeg -i output.mp4 -vf "drawtext=text='hello world':fontsize=24:fontcolor=white:x=10:y=10" osd.mp4
添加metadata
ffmpeg -i output.mp4 -metadata title="gengQingLin hangazi" -metadata artist="gengQingLin" -metadata year="2024" output_metadata.mp4
截取
截取片段
ffmpeg -i car.mp4 -t 3 -c copy car1.mp4
截取关键帧
ffmpeg -i output.mp4 -vf "select='eq(pict_type,I)'" -vsync vfr frames\frame_%04d.png
截取所有帧
ffmpeg -i car.mp4 -vf "select=1" -vsync vfr frames\frame_%04d.png
获取详细信息
ffmpeg -i output.mp4 -vf "select=gt(scene\,0.003)" -f null -
ffplay
播放yuv
ffplay -pixel_format yuv420p -video_size 480x272 -window_title "love sucks" -x 1080 -y 720 -loop 3 -i ds_480x272.yuv
ffprobe
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-show_format
-show_streams
-show_data
-show_entries format_tags
-show_entries stream_tags
